// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

package com.example.cognito;

// snippet-start:[cognito.java2.hello.main]
// snippet-start:[cognito.java2.ListUserPools.main]
// snippet-start:[cognito.java2.ListUserPools.import]
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cognitoidentityprovider.CognitoIdentityProviderClient;
import software.amazon.awssdk.services.cognitoidentityprovider.model.CognitoIdentityProviderException;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ListUserPoolsResponse;
import software.amazon.awssdk.services.cognitoidentityprovider.model.ListUserPoolsRequest;
// snippet-end:[cognito.java2.ListUserPools.import]

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class ListUserPools {
    public static void main(String[] args) {
        CognitoIdentityProviderClient cognitoClient = CognitoIdentityProviderClient.builder()
                .region(Region.US_EAST_1)
                .build();

        listAllUserPools(cognitoClient);
        cognitoClient.close();
    }

    public static void listAllUserPools(CognitoIdentityProviderClient cognitoClient) {
        try {
            ListUserPoolsRequest request = ListUserPoolsRequest.builder()
                    .maxResults(10)
                    .build();

            ListUserPoolsResponse response = cognitoClient.listUserPools(request);
            response.userPools().forEach(userpool -> {
                System.out.println("User pool " + userpool.name() + ", User ID " + userpool.id());
            });

        } catch (CognitoIdentityProviderException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
// snippet-end:[cognito.java2.ListUserPools.main]
// snippet-end:[cognito.java2.hello.main]